Is the K24Z3 (same as K24Z7 2012 Civic Si) a good engine to modify?
#1
Honda-Tech Member
Thread Starter
Join Date: Aug 2005
Location: Honolulu, HI, USA
Posts: 527
Likes: 0
Received 0 Likes
on
0 Posts
Is the K24Z3 (same as K24Z7 2012 Civic Si) a good engine to modify?
The new Civic Si will have the K24Z7 and from my understanding its nearly identical to the K24Z3 in the TSX. If i am not mistaken it has the crippled exhaust cam and integrated header. Will the K24Z3 (and K24Z7) be a motor with good potential to modify similar to the K20Ax series? Or would i need a K20Ax head, fuel, ecu set up for real power?
#2
Honda-Tech Member
iTrader: (1)
Join Date: Sep 2002
Location: northeast, tn, usa
Posts: 1,731
Likes: 0
Received 0 Likes
on
0 Posts
Re: Is the K24Z3 (same as K24Z7 2012 Civic Si) a good engine to modify?
i've seen a k24z3 block, and we laid a older style headgasket on it and it was WAY different... i've noticed the valve cover was shaped different too.
it doesnt appear you can put a "true vtec" head onto the latest k24z series
the accord k24z3 has 10.5:1 pistons, the tsx has 11:1
the new '12 si is the same hp as tsx, but 2 less tq
source: http://en.wikipedia.org/wiki/Honda_K_engine#K24Z3
i read a japanese article somewhere where honda noted that due to stronger enviromental cleanleness pressure, that the era of the k20 was over, and there releasing a 30 car limited production of the type r that is a 260hp 2.2 k20 block. the last k20 blocks to be produced
it doesnt appear you can put a "true vtec" head onto the latest k24z series
the accord k24z3 has 10.5:1 pistons, the tsx has 11:1
the new '12 si is the same hp as tsx, but 2 less tq
source: http://en.wikipedia.org/wiki/Honda_K_engine#K24Z3
i read a japanese article somewhere where honda noted that due to stronger enviromental cleanleness pressure, that the era of the k20 was over, and there releasing a 30 car limited production of the type r that is a 260hp 2.2 k20 block. the last k20 blocks to be produced
#4
Re: Is the K24Z3 (same as K24Z7 2012 Civic Si) a good engine to modify?
k24z3/z7 run a single lobe exhaust cam & have a single exit exit port on the cylinder head (which the catalytic converter bolts directly too) the camshafts are not interchangeable with older K-series. so no they are not a good motor to modify IMO unless you bolt a turbo to the head with simple bolton's you can make much more with an older k24a2
Both motors run the same (RL5) pistons, so both are 11:1
Both motors run the same (RL5) pistons, so both are 11:1
#6
Honda-Tech Member
Join Date: Sep 2003
Location: Toronto, Canada but from Montreal
Posts: 8,117
Likes: 0
Received 1 Like
on
1 Post
Re: Is the K24Z3 (same as K24Z7 2012 Civic Si) a good engine to modify?
i read a japanese article somewhere where honda noted that due to stronger enviromental cleanleness pressure, that the era of the k20 was over, and there releasing a 30 car limited production of the type r that is a 260hp 2.2 k20 block. the last k20 blocks to be produced
#7
Honda-Tech Member
Re: Is the K24Z3 (same as K24Z7 2012 Civic Si) a good engine to modify?
It depends on what you want to do.. they make great power on lower boost setups. full race kit on 10-12psi makes over 400.
All motor they are easy to get to 240ish hp, not much there after that.
All motor they are easy to get to 240ish hp, not much there after that.
Trending Topics
#8
Re: Is the K24Z3 (same as K24Z7 2012 Civic Si) a good engine to modify?
Hey I been looking at the new fb6, I haven't come across anything on the cam spec such as size, duration, or angle. I just wanted to know that is it out of the question to assume that the reason for not having VTEC cross over on the exhaust cam is that the single lobe is VTEC and that its running VTEC full time?? And wouldn't this help the VTEC cross over be more smooth, so there no lost of power?? Just wanted to know haven't seen anyone ask this or maybe I'm looking in the wrong place.
#9
Honda-Tech Member
iTrader: (2)
Join Date: Apr 2007
Location: Riverview, NB, Canada
Posts: 568
Likes: 0
Received 0 Likes
on
0 Posts
Re: Is the K24Z3 (same as K24Z7 2012 Civic Si) a good engine to modify?
Check out Humble Performance, they have been doing a lot of tuning on the new Si and have made a bunch of power with very little mods.
#11
Honda-Tech Member
Join Date: Dec 2018
Location: South jersey
Posts: 6
Likes: 0
Received 0 Likes
on
0 Posts
Re: Is the K24Z3 (same as K24Z7 2012 Civic Si) a good engine to modify?
Great motor to modify makes a lot of torque just natural aspiration is limited on power and yes you can swap k20 head
#12
Honda-Tech Member
Re: Is the K24Z3 (same as K24Z7 2012 Civic Si) a good engine to modify?
just wondering if you know if theres an exhaust thread for 2012 civic sedan si. Im trying to find out of i can delete the cats with out running a flash pro ecu. Or if i have to get the ecu then delete the cats.
#13
Honda-Tech Member
Re: Is the K24Z3 (same as K24Z7 2012 Civic Si) a good engine to modify?
You can try the typical O2 foulers and such to try and trick the CEL for the cat delete... but instead of that, why not just get to the closest Hondata Dealer that has a "Dealer FlashPro" kit and you can get your ecu flashed with a cat-delete tune for $350.00 USD ???
#14
Honda-Tech Member
Re: Is the K24Z3 (same as K24Z7 2012 Civic Si) a good engine to modify?
meaning i can flash my oem ecu with a cat delete tune...?
#15
Honda-Tech Member
Re: Is the K24Z3 (same as K24Z7 2012 Civic Si) a good engine to modify?
also i have an alpha series header for it. If i install it. Is the worst thats going to happen is im going to get a cel? Or will it go into a limp mode?
Thread
Thread Starter
Forum
Replies
Last Post